Faygo Union
Make good machines and be good people
Faygo Union Machinery Co., Ltd. in Jiangsu Province is a group company with four factories. The four branches respectively design and manufacture plastic pipe, profile, sheet and recycling granulate production equipment; beverage and household chemical bottle blowing equipment; beverage filling equipment; AGV and other automation robotic equipment.
Faygo Union Machinery Co., Ltd. in Jiangsu Province is sold to markets such as the Middle East, Southeast Asia, Africa, South America and Europe, and more than 170 countries around the world. Its products are widely recognized and trusted by customers, such as the line for the production of large diameter 1600mm/PE pipes for nuclear power plants, the products of Faygo Union in cooperation with world-famous companies.
Screw cabins in the feeding section of the twin screw extruder.
Faygo Union has excellent mechanical production technology. Today we will share with you the technical questions of “Screw combination of the feeding section of the twin screw extruder”. Let’s learn about it!
The function of the feeding section of the extruder is to receive the material fed into the feeding hole of the extruder and convey the solid material to the melting section of the extruder. Solids conveying is a single operation that is performed in this area of the extruder. Most single-screw plastics processing is based on pouring: the hopper of the extruder is filled with a polymer or a mixture of polymer and additives.
Screw Composition
Each screw in a twin screw extruder has a screw shaft that is as long as the extruder barrel, and these two elements must be perfectly matched to allow the screw to rotate freely.
The function of the feed section of the extruder is to feed the solids into the extruder without softening or melting the material, thereby maintaining the free flow of the solids.
Conveying Element
The two main parameters that determine a conveying element are the length of the element and the axial length of the thread that makes a full revolution around the element. The longer the thread length, the wider the channel for transporting the solids. Likewise, the longer the thread length, the further the material is transported in one revolution.
Conveying elements with short thread lengths, also known as “narrow threads,” can only transport material short distances, while elements with “wide threads” will transport material long distances along the entire length of the extruder.
Material Inlet Configuration
The design of the screw in the feed zone to collect the material entering the inlet and feed it quickly into the extruder is often simplified by the use of transition elements.
Powder Inlet Design
Powders are difficult to feed, especially powders with low bulk density and very small particle size. When a light powder falls through the feed hopper, air is entrained downwards along with the powder. The powder/air mixture takes up a large volume and effectively blocks the feed hopper, resulting in reduced or no polymer feed.
In addition, the entrained air must then exit the extruder. The escaping air has only one path out of the extruder, up into the feed hopper. The escaping air will rise into the feed hopper and can cause fluidization of very light powders. The suspended powder accumulates until it enters the feed hopper and the process is repeated. Due to clogged feed ports and powder feed interruptions, trapped air can cause problems such as low and unstable feed rates.
Minimizing air entrainment and removing air from powder is critical to maintaining an economical feed rate.
Faygo Union and Suzhou Yuda have been engaged in plastic extrusion, bottle blowing and filling, robotic AGV, AMR carts and automated system transformation projects for many years. Let’s work together to make the world a better place.
Company Profile
Jiangsu Faygo Union Machinery Co., Ltd is a high-tech enterprise specializing in the research, production and sales of plastic machinery and equipment, a private science and technology enterprise in Jiangsu Province. Suzhou Yuda Robot Factory is a robotics and automation manufacturing, as well as intelligent factory and new energy, environmental protection
